diff --git a/file_transfer.py b/file_transfer.py
index b6b664f..7100c26 100644
--- a/file_transfer.py
+++ b/file_transfer.py
@@ -5,6 +5,7 @@ from Crypto.Cipher import AES, PKCS1_OAEP
 from Crypto.Random import get_random_bytes
 from Crypto.Hash import SHA256
 
+
 class FileTransferApp:
     def __init__(self, host, port):
         self.host = host
@@ -17,6 +18,7 @@ class FileTransferApp:
         key = RSA.generate(2048)
         self.private_key = key.export_key()
         self.public_key = key.publickey().export_key()
+        print("密钥生成成功。")
 
     def send_file(self, filepath, receiver_host):
         try:
@@ -25,19 +27,19 @@ class FileTransferApp:
                 sender = Sender(filepath, receiver_public_key=self.public_key)
                 data_to_send = sender.send_file()
                 s.sendall(data_to_send)
-                print("File sent successfully.")
+                print("文件发送成功。")
         except Exception as e:
-            print(f"An error occurred while sending the file: {e}")
+            print(f"发送文件时发生错误: {e}")
 
     def receive_file(self):
         try:
             with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
                 s.bind((self.host, self.port))
                 s.listen()
-                print(f"Server listening on {self.host}:{self.port}")
+                print(f"服务器正在监听 {self.host}:{self.port}")
                 conn, addr = s.accept()
                 with conn:
-                    print(f"Connected by {addr}")
+                    print(f"已连接 {addr}")
                     data = b''
                     while True:
                         packet = conn.recv(1024)
@@ -47,31 +49,30 @@ class FileTransferApp:
                     receiver = Receiver(private_key=self.private_key)
                     decrypted_data = receiver.receive_file(data)
                     if decrypted_data:
-                        # Save or process the decrypted file data
+                        # 保存或处理解密后的文件数据
                         with open('received_file', 'wb') as f:
                             f.write(decrypted_data)
-                        print("File received and decrypted successfully.")
+                        print("文件接收并解密成功。")
         except Exception as e:
-            print(f"An error occurred while receiving the file: {e}")
+            print(f"接收文件时发生错误: {e}")
 
     def run(self):
         while self.running:
-            command = input("Enter 'generate_keys' to generate keys, 'send' to send a file, 'receive' to receive a file, or 'exit' to quit: ").strip().lower()
+            command = input("输入 'generate_keys' 生成密钥，'send' 发送文件，'receive' 接收文件，或 'exit' 退出程序: ").strip().lower()
             if command == 'generate_keys':
                 self.generate_keys()
-                print("Keys generated successfully.")
             elif command == 'send':
-                filepath = input("Enter the path of the file to send: ")
-                receiver_host = input("Enter the receiver's host (IP address): ")
+                filepath = input("输入要发送的文件路径: ")
+                receiver_host = input("输入接收方的计算机IP地址: ")
                 threading.Thread(target=self.send_file, args=(filepath, receiver_host)).start()
             elif command == 'receive':
                 threading.Thread(target=self.receive_file).start()
             elif command == 'exit':
                 self.running = False
-                print("Exiting application.")
+                print("正在退出程序。")
                 break
             else:
-                print("Invalid command.")
+                print("无效的命令。")
 
 if __name__ == "__main__":
     app = FileTransferApp(host='0.0.0.0', port=65432)